What U.S. company uses that largest amount of solar power?

Grade level: 4th-5th grades

Skills: Comparing numbers / Subtraction (Decimal numbers)

Related environmental issues: Renewable Energy 

Many large companies in the United States have installed solar panels to use renewable energy to meet their energy demand and to become more environmentally sustainable.

The table below shows top 5 companies that use the largest amount of solar power in the United States.

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1. Arrange companies from greatest to least.

2. How much more or less solar power does Target use than Walmart?

3. How much more or less solar power does Amazon use than Apple?

Source) SEIA (Solar Energy Industries Association), 2019. 2018 Solar Means Business Report


Answer keys

1. Apple, Amazon, Target, Walmart, Switch

2. 242.4 – 208.9 = 33.5        33,500 (kilowatts) more solar power

3. 393.3 – 329.8 = 63.5        63,500 (kilowatts) less solar power


young protesters demand an end of the age of fossil fuels — Has the fossil fuels production decreased in the United States?

Grade level: 4th – 6th grades

Skills: Line graphs 

Related environmental issues: Energy & Climate Change


To ask for immediate action on climate change, millions of young people and adults around the world skipped school and work and participated in protests on September 20, 2019. They demanded an end to the age of fossil fuels.


[Photo] Young protesters in New York City

The line graph below shows the amount of fossil fuels produced in the United States between 2000 and 2018.


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  1. In what year did the United States produce the largest amount of fossil fuels?
  2. In what year did the United States produce the least amount of fossil fuels?
  3. Between what two consecutive years, did the fossil fuel production drop significantly?
  4. Between what wo consecutive years, did the fossil fuel production increase significantly?
  5. Has the fossil fuel production in the United States decreased or increased over the years?


PDF version



Sources: U.S. Energy Information Administration, 2019. Energy Overview, Table 1.1 Primary Energy overview.



Answer keys

1. 2018

2. 2005

3. between 2015 and 2016

4. between 2013 and 2014 and between 2017 and 2018

5. Increased